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The effectiveness of a traditional Persian medicine preparation in the treatment of chronic cough: A randomized, double-blinded, placebo-controlled clinical trial.

Abstract：

OBJECTIVES:The roots and rhizomes of licorice (Glycyrrhiza glabra L.) are used in traditional Persian medicine for the treatment of numerous diseases. A chronic cough is a non-specific reaction to irritation anywhere in the respiratory system. It usually lasts for more than eight weeks. The current study aimed to evaluate the effect of a modified traditional Persian medicine preparation, licorice pastille, in healing a chronic cough. METHODS:Through a randomized, double-blinded, placebo-controlled clinical trial was performed in a respiratory disease clinic in Shiraz, Iran; between October 2016 and December 2017. Seventy participants with a chronic cough took part in the trial. The outcome measures were as the daily cough scores (the score being logged via patient symptoms, diary, and the visual analogue scale) and the quality of life measure of chronic cough according to the Leicester Cough Questionnaire. RESULTS:At baseline, there were no significant differences in the demographic or clinical (cough score) characteristics between the two groups. There was complete adherence to protocol in both groups but, the drop-out rate was 4 patients in the placebo and 6 ones in the intervention groups. The results at the end of the trial (Week 2) and follow-up (Week 4) demonstrated the efficacy of the licorice pastille in terms of the cough severity score against the placebo group. This item showed a significant decrease in the intervention group (1.2 ± 0.93) comparing to the placebo one (1.8 ± 1.03) at follow-up time. No major side effects were reported during the study and follow-up time. CONCLUSIONS:Licorice pastille could be a promising choice in the treatment of a chronic cough of unknown origin.

journal_name

Complement Ther Med

journal_title

Complementary therapies in medicine

authors

Ghaemi H,Masoompour SM,Afsharypuor S,Mosaffa-Jahromi M,Pasalar M,Ahmadi F,Niknahad H

doi

10.1016/j.ctim.2020.102324

subject

Has Abstract

pub_date

2020-03-01 00:00:00

pages

102324

eissn

0965-2299

issn

1873-6963

pii

S0965-2299(19)31663-2

journal_volume

pub_type

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The effectiveness of a traditional Persian medicine preparation in the treatment of chronic cough: A randomized, double-blinded, placebo-controlled clinical trial.